155492725 has 12 divisors (see below), whose sum is σ = 196450596. Its totient is φ = 122046080.

The previous prime is 155492699. The next prime is 155492731. The reversal of 155492725 is 527294551.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 1385329 + 154107396 = 1177^2 + 12414^2 .

It is not a de Polignac number, because 155492725 - 2¹⁷ = 155361653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57352 + ... + 60001.

It is an arithmetic number, because the mean of its divisors is an integer number (16370883).

Almost surely, 2^155492725 is an apocalyptic number.

It is an amenable number.

155492725 is a deficient number, since it is larger than the sum of its proper divisors (40957871).

155492725 is a wasteful number, since it uses less digits than its factorization.

155492725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117416 (or 117411 counting only the distinct ones).

The product of its digits is 126000, while the sum is 40.

The square root of 155492725 is about 12469.6722090037. The cubic root of 155492725 is about 537.7371299107.

The spelling of 155492725 in words is "one hundred fifty-five million, four hundred ninety-two thousand, seven hundred twenty-five".