25446242016 has 120 divisors (see below), whose sum is σ = 80593466184. Its totient is φ = 7829602560.

The previous prime is 25446241993. The next prime is 25446242021. The reversal of 25446242016 is 61024264452.

25446242016 is a `hidden beast` number, since 2 + 5 + 4 + 4 + 624 + 20 + 1 + 6 = 666.

It is a super-2 number, since 2×25446242016² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 343890 + ... + 411281.

Almost surely, 2^25446242016 is an apocalyptic number.

25446242016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

25446242016 is an abundant number, since it is smaller than the sum of its proper divisors (55147224168).

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

25446242016 is a wasteful number, since it uses less digits than its factorization.

25446242016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755206 (or 755189 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 36.

The spelling of 25446242016 in words is "twenty-five billion, four hundred forty-six million, two hundred forty-two thousand, sixteen".