25161790 has 16 divisors (see below), whose sum is σ = 45356112. Its totient is φ = 10050304.

The previous prime is 25161781. The next prime is 25161797. The reversal of 25161790 is 9716152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25161797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8142 + ... + 10798.

It is an arithmetic number, because the mean of its divisors is an integer number (2834757).

Almost surely, 2^25161790 is an apocalyptic number.

25161790 is a deficient number, since it is larger than the sum of its proper divisors (20194322).

25161790 is a wasteful number, since it uses less digits than its factorization.

25161790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3611.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 25161790 is about 5016.1529083552. The cubic root of 25161790 is about 293.0311871038.

The spelling of 25161790 in words is "twenty-five million, one hundred sixty-one thousand, seven hundred ninety".