25013100 has 144 divisors (see below), whose sum is σ = 84939008. Its totient is φ = 5564160.

The previous prime is 25013081. The next prime is 25013113. The reversal of 25013100 is 131052.

It is a super-2 number, since 2×25013100² = 1251310343220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90162 + ... + 90438.

Almost surely, 2^25013100 is an apocalyptic number.

25013100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25013100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42469504).

25013100 is an abundant number, since it is smaller than the sum of its proper divisors (59925908).

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

25013100 is a wasteful number, since it uses less digits than its factorization.

25013100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344 (or 337 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 12.

The square root of 25013100 is about 5001.3098284349. The cubic root of 25013100 is about 292.4528377463.

Adding to 25013100 its reverse (131052), we get a palindrome (25144152).

The spelling of 25013100 in words is "twenty-five million, thirteen thousand, one hundred".