1252423404550 has 48 divisors (see below), whose sum is σ = 2411077266000. Its totient is φ = 483445289600.

The previous prime is 1252423404539. The next prime is 1252423404581. The reversal of 1252423404550 is 554043242521.

It is a super-2 number, since 2×1252423404550² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2604465 + ... + 3047635.

It is an arithmetic number, because the mean of its divisors is an integer number (50230776375).

Almost surely, 2^{1252423404550} is an apocalyptic number.

1252423404550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1252423404550 is a deficient number, since it is larger than the sum of its proper divisors (1158653861450).

1252423404550 is a wasteful number, since it uses less digits than its factorization.

1252423404550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445161 (or 445156 counting only the distinct ones).

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 1252423404550 in words is "one trillion, two hundred fifty-two billion, four hundred twenty-three million, four hundred four thousand, five hundred fifty".