25148538 has 24 divisors (see below), whose sum is σ = 54587988. Its totient is φ = 8367552.

The previous prime is 25148527. The next prime is 25148569. The reversal of 25148538 is 83584152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22724289 + 2424249 = 4767^2 + 1557^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13470 + ... + 15222.

Almost surely, 2^25148538 is an apocalyptic number.

25148538 is an abundant number, since it is smaller than the sum of its proper divisors (29439450).

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

25148538 is a wasteful number, since it uses less digits than its factorization.

25148538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2558 (or 2555 counting only the distinct ones).

The product of its digits is 38400, while the sum is 36.

The square root of 25148538 is about 5014.8318017656. The cubic root of 25148538 is about 292.9797343359.

The spelling of 25148538 in words is "twenty-five million, one hundred forty-eight thousand, five hundred thirty-eight".