25140530 has 8 divisors (see below), whose sum is σ = 45252972. Its totient is φ = 10056208.

The previous prime is 25140527. The next prime is 25140589. The reversal of 25140530 is 3504152.

It can be written as a sum of positive squares in 2 ways, for example, as 24433249 + 707281 = 4943^2 + 841^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257017 + ... + 1257036.

Almost surely, 2^25140530 is an apocalyptic number.

25140530 is a deficient number, since it is larger than the sum of its proper divisors (20112442).

25140530 is a wasteful number, since it uses less digits than its factorization.

25140530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514060.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 25140530 is about 5014.0333066305. The cubic root of 25140530 is about 292.9486333790.

Adding to 25140530 its reverse (3504152), we get a palindrome (28644682).

The spelling of 25140530 in words is "twenty-five million, one hundred forty thousand, five hundred thirty".