25531434 has 48 divisors (see below), whose sum is σ = 57238272. Its totient is φ = 8220384.

The previous prime is 25531427. The next prime is 25531447. The reversal of 25531434 is 43413552.

25531434 = 271² + 272² + ... + 458².

It is a junction number, because it is equal to n+sod(n) for n = 25531398 and 25531407.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86992 + ... + 87284.

It is an arithmetic number, because the mean of its divisors is an integer number (1192464).

Almost surely, 2^25531434 is an apocalyptic number.

25531434 is an abundant number, since it is smaller than the sum of its proper divisors (31706838).

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

25531434 is a wasteful number, since it uses less digits than its factorization.

25531434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 448 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 25531434 is about 5052.8639403807. The cubic root of 25531434 is about 294.4591603525.

Adding to 25531434 its reverse (43413552), we get a palindrome (68944986).

The spelling of 25531434 in words is "twenty-five million, five hundred thirty-one thousand, four hundred thirty-four".