25149530 has 16 divisors (see below), whose sum is σ = 51736320. Its totient is φ = 8622672.

The previous prime is 25149499. The next prime is 25149533. The reversal of 25149530 is 3594152.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 25149493 and 25149502.

It is not an unprimeable number, because it can be changed into a prime (25149533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179570 + ... + 179709.

It is an arithmetic number, because the mean of its divisors is an integer number (3233520).

Almost surely, 2^25149530 is an apocalyptic number.

25149530 is an abundant number, since it is smaller than the sum of its proper divisors (26586790).

25149530 is a wasteful number, since it uses less digits than its factorization.

25149530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359293.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 25149530 is about 5014.9307073977. The cubic root of 25149530 is about 292.9835865423.

The spelling of 25149530 in words is "twenty-five million, one hundred forty-nine thousand, five hundred thirty".