25920730 has 32 divisors (see below), whose sum is σ = 51746688. Its totient is φ = 9268800.

The previous prime is 25920709. The next prime is 25920737. The reversal of 25920730 is 3702952.

25920730 = T₄₇₆ + T₄₇₇ + ... + T₆₄₀.

It is not an unprimeable number, because it can be changed into a prime (25920737) 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, 4779 + ... + 8641.

It is an arithmetic number, because the mean of its divisors is an integer number (1617084).

Almost surely, 2^25920730 is an apocalyptic number.

25920730 is a deficient number, since it is larger than the sum of its proper divisors (25825958).

25920730 is a wasteful number, since it uses less digits than its factorization.

25920730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3942.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 25920730 is about 5091.2405168092. The cubic root of 25920730 is about 295.9482271880.

The spelling of 25920730 in words is "twenty-five million, nine hundred twenty thousand, seven hundred thirty".