25261516 has 48 divisors (see below), whose sum is σ = 52157952. Its totient is φ = 10483200.

The previous prime is 25261501. The next prime is 25261543. The reversal of 25261516 is 61516252.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 192771 + ... + 192901.

It is an arithmetic number, because the mean of its divisors is an integer number (1086624).

Almost surely, 2^25261516 is an apocalyptic number.

It is an amenable number.

25261516 is an abundant number, since it is smaller than the sum of its proper divisors (26896436).

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

25261516 is a wasteful number, since it uses less digits than its factorization.

25261516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 308 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 25261516 is about 5026.0835647649. The cubic root of 25261516 is about 293.4178091180.

Adding to 25261516 its reverse (61516252), we get a palindrome (86777768).

The spelling of 25261516 in words is "twenty-five million, two hundred sixty-one thousand, five hundred sixteen".