25161007 has 4 divisors (see below), whose sum is σ = 25209640. Its totient is φ = 25112376.

The previous prime is 25161001. The next prime is 25161013. The reversal of 25161007 is 70016152.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (25161001) and next prime (25161013).

It is a cyclic number.

It is not a de Polignac number, because 25161007 - 2¹⁹ = 24636719 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 (25161001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23532 + ... + 24577.

It is an arithmetic number, because the mean of its divisors is an integer number (6302410).

Almost surely, 2^25161007 is an apocalyptic number.

25161007 is a deficient number, since it is larger than the sum of its proper divisors (48633).

25161007 is an equidigital number, since it uses as much as digits as its factorization.

25161007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48632.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 25161007 is about 5016.0748598880. The cubic root of 25161007 is about 293.0281474976.

Adding to 25161007 its reverse (70016152), we get a palindrome (95177159).

The spelling of 25161007 in words is "twenty-five million, one hundred sixty-one thousand, seven".