25449600231 has 24 divisors (see below), whose sum is σ = 40418187264. Its totient is φ = 15302543760.

The previous prime is 25449600227. The next prime is 25449600259. The reversal of 25449600231 is 13200694452.

It is a happy number.

25449600231 is a `hidden beast` number, since 2 + 5 + 4 + 49 + 600 + 2 + 3 + 1 = 666.

It is not a de Polignac number, because 25449600231 - 2² = 25449600227 is a prime.

It is a super-2 number, since 2×25449600231² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25449600131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 999501 + ... + 1024646.

It is an arithmetic number, because the mean of its divisors is an integer number (1684091136).

Almost surely, 2^25449600231 is an apocalyptic number.

25449600231 is a deficient number, since it is larger than the sum of its proper divisors (14968587033).

25449600231 is a wasteful number, since it uses less digits than its factorization.

25449600231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024291 (or 2024288 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 25449600231 in words is "twenty-five billion, four hundred forty-nine million, six hundred thousand, two hundred thirty-one".