25629547545 has 96 divisors (see below), whose sum is σ = 53504505600. Its totient is φ = 11086958592.

The previous prime is 25629547543. The next prime is 25629547579. The reversal of 25629547545 is 54574592652.

25629547545 is a `hidden beast` number, since 2 + 5 + 6 + 2 + 95 + 4 + 7 + 545 = 666.

It is not a de Polignac number, because 25629547545 - 2¹ = 25629547543 is a prime.

It is a super-2 number, since 2×25629547545² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 25629547491 and 25629547500.

It is not an unprimeable number, because it can be changed into a prime (25629547543) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6755169 + ... + 6758961.

It is an arithmetic number, because the mean of its divisors is an integer number (557338600).

Almost surely, 2^25629547545 is an apocalyptic number.

It is an amenable number.

25629547545 is an abundant number, since it is smaller than the sum of its proper divisors (27874958055).

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

25629547545 is a wasteful number, since it uses less digits than its factorization.

25629547545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4959 (or 4956 counting only the distinct ones).

The product of its digits is 15120000, while the sum is 54.

The spelling of 25629547545 in words is "twenty-five billion, six hundred twenty-nine million, five hundred forty-seven thousand, five hundred forty-five".