1252905542451 has 96 divisors (see below), whose sum is σ = 1929787711488. Its totient is φ = 782076072960.

The previous prime is 1252905542431. The next prime is 1252905542477. The reversal of 1252905542451 is 1542455092521.

1252905542451 is a `hidden beast` number, since 1 + 2 + 5 + 2 + 90 + 554 + 2 + 4 + 5 + 1 = 666.

It is not a de Polignac number, because 1252905542451 - 2⁵ = 1252905542419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1252905542397 and 1252905542406.

It is not an unprimeable number, because it can be changed into a prime (1252905542431) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1314695791 + ... + 1314696743.

It is an arithmetic number, because the mean of its divisors is an integer number (20101955328).

Almost surely, 2^{1252905542451} is an apocalyptic number.

1252905542451 is a deficient number, since it is larger than the sum of its proper divisors (676882169037).

1252905542451 is a wasteful number, since it uses less digits than its factorization.

1252905542451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2081 (or 2078 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 45.

The spelling of 1252905542451 in words is "one trillion, two hundred fifty-two billion, nine hundred five million, five hundred forty-two thousand, four hundred fifty-one".