1265002501400 has 48 divisors (see below), whose sum is σ = 3208506350040. Its totient is φ = 460000908800.

The previous prime is 1265002501391. The next prime is 1265002501423. The reversal of 1265002501400 is 41052005621.

It is a self number, because there is not a number n which added to its sum of digits gives 1265002501400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 287498369 + ... + 287502768.

Almost surely, 2^{1265002501400} is an apocalyptic number.

1265002501400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1265002501400 is an abundant number, since it is smaller than the sum of its proper divisors (1943503848640).

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

1265002501400 is a wasteful number, since it uses less digits than its factorization.

1265002501400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575001164 (or 575001155 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 1265002501400 in words is "one trillion, two hundred sixty-five billion, two million, five hundred one thousand, four hundred".