265402652550 has 48 divisors (see below), whose sum is σ = 752226949632. Its totient is φ = 60663463200.

The previous prime is 265402652533. The next prime is 265402652551. The reversal of 265402652550 is 55256204562.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265402652551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 126381166 + ... + 126383265.

It is an arithmetic number, because the mean of its divisors is an integer number (15671394784).

Almost surely, 2^265402652550 is an apocalyptic number.

265402652550 is an abundant number, since it is smaller than the sum of its proper divisors (486824297082).

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

265402652550 is a wasteful number, since it uses less digits than its factorization.

265402652550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252764453 (or 252764448 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 42.

The spelling of 265402652550 in words is "two hundred sixty-five billion, four hundred two million, six hundred fifty-two thousand, five hundred fifty".