155663132625 has 720 divisors, whose sum is σ = 399175036416. Its totient is φ = 57788640000.

The previous prime is 155663132621. The next prime is 155663132629. The reversal of 155663132625 is 526231366551.

155663132625 is a `hidden beast` number, since 1 + 5 + 5 + 6 + 6 + 3 + 13 + 2 + 625 = 666.

It is an interprime number because it is at equal distance from previous prime (155663132621) and next prime (155663132629).

It is not a de Polignac number, because 155663132625 - 2² = 155663132621 is a prime.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155663132621) by changing a digit.

It is a polite number, since it can be written in 719 ways as a sum of consecutive naturals, for example, 5021391360 + ... + 5021391390.

Almost surely, 2^155663132625 is an apocalyptic number.

155663132625 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

155663132625 is an abundant number, since it is smaller than the sum of its proper divisors (243511903791).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155663132625 is a wasteful number, since it uses less digits than its factorization.

155663132625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 70 counting only the distinct ones).

The product of its digits is 972000, while the sum is 45.

The spelling of 155663132625 in words is "one hundred fifty-five billion, six hundred sixty-three million, one hundred thirty-two thousand, six hundred twenty-five".