25134340 has 96 divisors (see below), whose sum is σ = 69350400. Its totient is φ = 7413120.

The previous prime is 25134337. The next prime is 25134341. The reversal of 25134340 is 4343152.

25134340 = 149² + 150² + ... + 428².

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (25134341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28831 + ... + 29689.

It is an arithmetic number, because the mean of its divisors is an integer number (722400).

Almost surely, 2^25134340 is an apocalyptic number.

25134340 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 25134340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34675200).

25134340 is an abundant number, since it is smaller than the sum of its proper divisors (44216060).

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

25134340 is a wasteful number, since it uses less digits than its factorization.

25134340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 905 (or 903 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 25134340 is about 5013.4160010915. The cubic root of 25134340 is about 292.9245885281.

Adding to 25134340 its reverse (4343152), we get a palindrome (29477492).

The spelling of 25134340 in words is "twenty-five million, one hundred thirty-four thousand, three hundred forty".