25913000 has 32 divisors (see below), whose sum is σ = 60638760. Its totient is φ = 10364800.

The previous prime is 25912967. The next prime is 25913009. The reversal of 25913000 is 31952.

It can be written as a sum of positive squares in 4 ways, for example, as 8988004 + 16924996 = 2998^2 + 4114^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (25913009) 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, 11957 + ... + 13956.

Almost surely, 2^25913000 is an apocalyptic number.

25913000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25913000 is an abundant number, since it is smaller than the sum of its proper divisors (34725760).

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

25913000 is a wasteful number, since it uses less digits than its factorization.

25913000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25934 (or 25920 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 25913000 is about 5090.4813131962. The cubic root of 25913000 is about 295.9188053412.

Adding to 25913000 its reverse (31952), we get a palindrome (25944952).

The spelling of 25913000 in words is "twenty-five million, nine hundred thirteen thousand".