55731449025 has 72 divisors (see below), whose sum is σ = 115211239104. Its totient is φ = 25224912000.

The previous prime is 55731448979. The next prime is 55731449071. The reversal of 55731449025 is 52094413755.

55731449025 is a `hidden beast` number, since 5 + 573 + 14 + 49 + 0 + 25 = 666.

It is an interprime number because it is at equal distance from previous prime (55731448979) and next prime (55731449071).

It is not a de Polignac number, because 55731449025 - 2¹² = 55731444929 is a prime.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 16099 + ... + 334248.

Almost surely, 2^55731449025 is an apocalyptic number.

It is an amenable number.

55731449025 is an abundant number, since it is smaller than the sum of its proper divisors (59479790079).

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

55731449025 is a wasteful number, since it uses less digits than its factorization.

55731449025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350471 (or 350463 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 45.

The spelling of 55731449025 in words is "fifty-five billion, seven hundred thirty-one million, four hundred forty-nine thousand, twenty-five".