1253404505 has 16 divisors (see below), whose sum is σ = 1558656000. Its totient is φ = 966463680.

The previous prime is 1253404487. The next prime is 1253404511. The reversal of 1253404505 is 5054043521.

It is not a de Polignac number, because 1253404505 - 2²⁶ = 1186295641 is a prime.

It is a super-3 number, since 3×1253404505³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79640 + ... + 94070.

It is an arithmetic number, because the mean of its divisors is an integer number (97416000).

Almost surely, 2^1253404505 is an apocalyptic number.

It is an amenable number.

1253404505 is a deficient number, since it is larger than the sum of its proper divisors (305251495).

1253404505 is a wasteful number, since it uses less digits than its factorization.

1253404505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15064.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 1253404505 is about 35403.4532920166. The cubic root of 1253404505 is about 1078.1944296448.

The spelling of 1253404505 in words is "one billion, two hundred fifty-three million, four hundred four thousand, five hundred five".