1252254661 has 8 divisors (see below), whose sum is σ = 1445318784. Its totient is φ = 1062733200.

The previous prime is 1252254649. The next prime is 1252254667. The reversal of 1252254661 is 1664522521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1252254661 - 2⁹ = 1252254149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252254667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884905 + ... + 886318.

It is an arithmetic number, because the mean of its divisors is an integer number (180664848).

Almost surely, 2^1252254661 is an apocalyptic number.

It is an amenable number.

1252254661 is a deficient number, since it is larger than the sum of its proper divisors (193064123).

1252254661 is a wasteful number, since it uses less digits than its factorization.

1252254661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1771331.

The product of its digits is 28800, while the sum is 34.

The square root of 1252254661 is about 35387.2104156290. The cubic root of 1252254661 is about 1077.8646253154.

The spelling of 1252254661 in words is "one billion, two hundred fifty-two million, two hundred fifty-four thousand, six hundred sixty-one".