25730070 has 16 divisors (see below), whose sum is σ = 61752240. Its totient is φ = 6861344.

The previous prime is 25730057. The next prime is 25730071. The reversal of 25730070 is 7003752.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 25730070.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25730071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 428805 + ... + 428864.

It is an arithmetic number, because the mean of its divisors is an integer number (3859515).

Almost surely, 2^25730070 is an apocalyptic number.

25730070 is an abundant number, since it is smaller than the sum of its proper divisors (36022170).

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

25730070 is a wasteful number, since it uses less digits than its factorization.

25730070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 857679.

The product of its (nonzero) digits is 1470, while the sum is 24.

The square root of 25730070 is about 5072.4816411693. The cubic root of 25730070 is about 295.2208247954.

The spelling of 25730070 in words is "twenty-five million, seven hundred thirty thousand, seventy".