158137452225 has 45 divisors (see below), whose sum is σ = 292958377657. Its totient is φ = 84330430560.

The previous prime is 158137452217. The next prime is 158137452229. The reversal of 158137452225 is 522254731851.

The square root of 158137452225 is 397665.

It is a perfect power (a square), and thus also a powerful number.

158137452225 is a `hidden beast` number, since 1 + 5 + 8 + 1 + 374 + 52 + 225 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 53720577729 + 104416874496 = 231777^2 + 323136^2 .

It is a tau number, because it is divible by the number of its divisors (45).

It is not a de Polignac number, because 158137452225 - 2³ = 158137452217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158137452229) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 17890507 + ... + 17899343.

Almost surely, 2^158137452225 is an apocalyptic number.

158137452225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

158137452225 is the 397665-th square number.

158137452225 is the 198833-rd centered octagonal number.

It is an amenable number.

158137452225 is a deficient number, since it is larger than the sum of its proper divisors (134820925432).

158137452225 is an frugal number, since it uses more digits than its factorization.

158137452225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17696 (or 8845 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The spelling of 158137452225 in words is "one hundred fifty-eight billion, one hundred thirty-seven million, four hundred fifty-two thousand, two hundred twenty-five".