25101530 has 32 divisors (see below), whose sum is σ = 47258640. Its totient is φ = 9587200.

The previous prime is 25101529. The next prime is 25101547. The reversal of 25101530 is 3510152.

It can be written as a sum of positive squares in 8 ways, for example, as 22972849 + 2128681 = 4793^2 + 1459^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25101499 and 25101508.

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, 28862 + ... + 29718.

Almost surely, 2^25101530 is an apocalyptic number.

25101530 is a deficient number, since it is larger than the sum of its proper divisors (22157110).

25101530 is a wasteful number, since it uses less digits than its factorization.

25101530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 25101530 is about 5010.1427125382. The cubic root of 25101530 is about 292.7970732013.

Adding to 25101530 its reverse (3510152), we get a palindrome (28611682).

The spelling of 25101530 in words is "twenty-five million, one hundred one thousand, five hundred thirty".