2525431858 has 4 divisors (see below), whose sum is σ = 3788147790. Its totient is φ = 1262715928.

The previous prime is 2525431849. The next prime is 2525431897. The reversal of 2525431858 is 8581345252.

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

It can be written as a sum of positive squares in only one way, i.e., 1485562849 + 1039869009 = 38543^2 + 32247^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631357963 + ... + 631357966.

Almost surely, 2^2525431858 is an apocalyptic number.

2525431858 is a deficient number, since it is larger than the sum of its proper divisors (1262715932).

2525431858 is a wasteful number, since it uses less digits than its factorization.

2525431858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262715931.

The product of its digits is 384000, while the sum is 43.

The square root of 2525431858 is about 50253.6750695907. The cubic root of 2525431858 is about 1361.7954691963.

The spelling of 2525431858 in words is "two billion, five hundred twenty-five million, four hundred thirty-one thousand, eight hundred fifty-eight".