25158257046 has 96 divisors (see below), whose sum is σ = 60940658688. Its totient is φ = 7732882080.

The previous prime is 25158257039. The next prime is 25158257051. The reversal of 25158257046 is 64075285152.

25158257046 is a `hidden beast` number, since 2 + 515 + 8 + 25 + 70 + 46 = 666.

It is a super-2 number, since 2×25158257046² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25158256992 and 25158257010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9292425 + ... + 9295131.

It is an arithmetic number, because the mean of its divisors is an integer number (634798528).

Almost surely, 2^25158257046 is an apocalyptic number.

25158257046 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 25158257046, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30470329344).

25158257046 is an abundant number, since it is smaller than the sum of its proper divisors (35782401642).

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

25158257046 is a wasteful number, since it uses less digits than its factorization.

25158257046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4208 (or 4196 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 25158257046 in words is "twenty-five billion, one hundred fifty-eight million, two hundred fifty-seven thousand, forty-six".