2525249831 has 4 divisors (see below), whose sum is σ = 2719499832. Its totient is φ = 2330999832.

The previous prime is 2525249827. The next prime is 2525249843. The reversal of 2525249831 is 1389425252.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2525249831 - 2² = 2525249827 is a prime.

It is a super-2 number, since 2×2525249831² = 12753773417931057122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2525249431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97124981 + ... + 97125006.

It is an arithmetic number, because the mean of its divisors is an integer number (679874958).

Almost surely, 2^2525249831 is an apocalyptic number.

2525249831 is a deficient number, since it is larger than the sum of its proper divisors (194250001).

2525249831 is a wasteful number, since it uses less digits than its factorization.

2525249831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194250000.

The product of its digits is 172800, while the sum is 41.

The square root of 2525249831 is about 50251.8639554793. The cubic root of 2525249831 is about 1361.7627501059.

The spelling of 2525249831 in words is "two billion, five hundred twenty-five million, two hundred forty-nine thousand, eight hundred thirty-one".