25023156436340 has 24 divisors (see below), whose sum is σ = 52665663342600. Its totient is φ = 9986970226688.

The previous prime is 25023156436283. The next prime is 25023156436393. The reversal of 25023156436340 is 4363465132052.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 670846178704 + 24352310257636 = 819052^2 + 4934806^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25023156436291 and 25023156436300.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1393262537 + ... + 1393280496.

It is an arithmetic number, because the mean of its divisors is an integer number (2194402639275).

Almost surely, 2^{25023156436340} is an apocalyptic number.

25023156436340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25023156436340 is an abundant number, since it is smaller than the sum of its proper divisors (27642506906260).

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

25023156436340 is a wasteful number, since it uses less digits than its factorization.

25023156436340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2786543491 (or 2786543489 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 44.

The spelling of 25023156436340 in words is "twenty-five trillion, twenty-three billion, one hundred fifty-six million, four hundred thirty-six thousand, three hundred forty".