25405252000 has 48 divisors (see below), whose sum is σ = 62420713992. Its totient is φ = 10162099200.

The previous prime is 25405251871. The next prime is 25405252009. The reversal of 25405252000 is 25250452.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1749581584 + 23655670416 = 41828^2 + 153804^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (25405252009) 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, 3171657 + ... + 3179656.

Almost surely, 2^25405252000 is an apocalyptic number.

25405252000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25405252000 is an abundant number, since it is smaller than the sum of its proper divisors (37015461992).

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

25405252000 is an equidigital number, since it uses as much as digits as its factorization.

25405252000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6351338 (or 6351320 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 25405252000 in words is "twenty-five billion, four hundred five million, two hundred fifty-two thousand".