25021948 has 18 divisors (see below), whose sum is σ = 50937936. Its totient is φ = 10723608.

The previous prime is 25021903. The next prime is 25021949. The reversal of 25021948 is 84912052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25021949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 63636 + ... + 64027.

Almost surely, 2^25021948 is an apocalyptic number.

25021948 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

25021948 is an abundant number, since it is smaller than the sum of its proper divisors (25915988).

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

25021948 is a wasteful number, since it uses less digits than its factorization.

25021948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127681 (or 127672 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 25021948 is about 5002.1943184966. The cubic root of 25021948 is about 292.4873172478.

The spelling of 25021948 in words is "twenty-five million, twenty-one thousand, nine hundred forty-eight".