25274216420 has 12 divisors (see below), whose sum is σ = 53075854524. Its totient is φ = 10109686560.

The previous prime is 25274216411. The next prime is 25274216449. The reversal of 25274216420 is 2461247252.

It can be written as a sum of positive squares in 2 ways, for example, as 15878016064 + 9396200356 = 126008^2 + 96934^2 .

It is a super-4 number, since 4×25274216420⁴ (a number of 43 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631855391 + ... + 631855430.

It is an arithmetic number, because the mean of its divisors is an integer number (4422987877).

Almost surely, 2^25274216420 is an apocalyptic number.

25274216420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25274216420 is an abundant number, since it is smaller than the sum of its proper divisors (27801638104).

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

25274216420 is a wasteful number, since it uses less digits than its factorization.

25274216420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263710830 (or 1263710828 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 25274216420 in words is "twenty-five billion, two hundred seventy-four million, two hundred sixteen thousand, four hundred twenty".