1625161455 has 16 divisors (see below), whose sum is σ = 2889176160. Its totient is φ = 866752704.

The previous prime is 1625161411. The next prime is 1625161463. The reversal of 1625161455 is 5541615261.

1625161455 is a `hidden beast` number, since 1 + 625 + 16 + 14 + 5 + 5 = 666.

It is not a de Polignac number, because 1625161455 - 2⁸ = 1625161199 is a prime.

It is a super-2 number, since 2×1625161455² = 5282299509635434050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6018982 + ... + 6019251.

It is an arithmetic number, because the mean of its divisors is an integer number (180573510).

Almost surely, 2^1625161455 is an apocalyptic number.

1625161455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1625161455 is a deficient number, since it is larger than the sum of its proper divisors (1264014705).

1625161455 is a wasteful number, since it uses less digits than its factorization.

1625161455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12038247 (or 12038241 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 1625161455 is about 40313.2912945594. The cubic root of 1625161455 is about 1175.7062794675.

The spelling of 1625161455 in words is "one billion, six hundred twenty-five million, one hundred sixty-one thousand, four hundred fifty-five".