155526625551 has 64 divisors (see below), whose sum is σ = 236017926144. Its totient is φ = 90246700800.

The previous prime is 155526625483. The next prime is 155526625591.

155526625551 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 155526625551 - 2¹⁰ = 155526624527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155526625551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155526625591) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38850516 + ... + 38854518.

It is an arithmetic number, because the mean of its divisors is an integer number (3687780096).

Almost surely, 2^155526625551 is an apocalyptic number.

155526625551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155526625551 is a deficient number, since it is larger than the sum of its proper divisors (80491300593).

155526625551 is a wasteful number, since it uses less digits than its factorization.

155526625551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4444.

The product of its digits is 2250000, while the sum is 48.

The spelling of 155526625551 in words is "one hundred fifty-five billion, five hundred twenty-six million, six hundred twenty-five thousand, five hundred fifty-one".