25128234 has 12 divisors (see below), whose sum is σ = 54444546. Its totient is φ = 8376072.

The previous prime is 25128223. The next prime is 25128263. The reversal of 25128234 is 43282152.

It can be written as a sum of positive squares in only one way, i.e., 23011209 + 2117025 = 4797^2 + 1455^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25128198 and 25128207.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 697989 + ... + 698024.

Almost surely, 2^25128234 is an apocalyptic number.

25128234 is an abundant number, since it is smaller than the sum of its proper divisors (29316312).

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

25128234 is a wasteful number, since it uses less digits than its factorization.

25128234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396021 (or 1396018 counting only the distinct ones).

The product of its digits is 3840, while the sum is 27.

The square root of 25128234 is about 5012.8069980800. The cubic root of 25128234 is about 292.9008661043.

The spelling of 25128234 in words is "twenty-five million, one hundred twenty-eight thousand, two hundred thirty-four".