25140709 has 16 divisors (see below), whose sum is σ = 28926720. Its totient is φ = 21636160.

The previous prime is 25140707. The next prime is 25140737. The reversal of 25140709 is 90704152.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25140709 - 2¹ = 25140707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25140707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16164 + ... + 17650.

It is an arithmetic number, because the mean of its divisors is an integer number (1807920).

Almost surely, 2^25140709 is an apocalyptic number.

25140709 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

25140709 is a deficient number, since it is larger than the sum of its proper divisors (3786011).

25140709 is a wasteful number, since it uses less digits than its factorization.

25140709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1580.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 25140709 is about 5014.0511565001. The cubic root of 25140709 is about 292.9493286399.

The spelling of 25140709 in words is "twenty-five million, one hundred forty thousand, seven hundred nine".