25540023051 has 12 divisors (see below), whose sum is σ = 36892865880. Its totient is φ = 17025887520.

The previous prime is 25540023037. The next prime is 25540023077. The reversal of 25540023051 is 15032004552.

It is a happy number.

25540023051 is a `hidden beast` number, since 25 + 5 + 400 + 230 + 5 + 1 = 666.

It is not a de Polignac number, because 25540023051 - 2⁶ = 25540022987 is a prime.

It is a super-2 number, since 2×25540023051² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25540023011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 189255 + ... + 294783.

It is an arithmetic number, because the mean of its divisors is an integer number (3074405490).

Almost surely, 2^25540023051 is an apocalyptic number.

25540023051 is a deficient number, since it is larger than the sum of its proper divisors (11352842829).

25540023051 is a wasteful number, since it uses less digits than its factorization.

25540023051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132426 (or 132423 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The spelling of 25540023051 in words is "twenty-five billion, five hundred forty million, twenty-three thousand, fifty-one".