25512391470 has 128 divisors (see below), whose sum is σ = 67029368832. Its totient is φ = 6186700800.

The previous prime is 25512391343. The next prime is 25512391507. The reversal of 25512391470 is 7419321552.

25512391470 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 17342835 + ... + 17344305.

It is an arithmetic number, because the mean of its divisors is an integer number (523666944).

Almost surely, 2^25512391470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25512391470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33514684416).

25512391470 is an abundant number, since it is smaller than the sum of its proper divisors (41516977362).

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

25512391470 is a wasteful number, since it uses less digits than its factorization.

25512391470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2626.

The product of its (nonzero) digits is 75600, while the sum is 39.

The spelling of 25512391470 in words is "twenty-five billion, five hundred twelve million, three hundred ninety-one thousand, four hundred seventy".