1425215201 has 4 divisors (see below), whose sum is σ = 1425314352. Its totient is φ = 1425116052.

The previous prime is 1425215191. The next prime is 1425215219. The reversal of 1425215201 is 1025125241.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1425215201 is a prime.

It is a super-2 number, since 2×1425215201² = 4062476738322940802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1425215291) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23411 + ... + 58296.

It is an arithmetic number, because the mean of its divisors is an integer number (356328588).

Almost surely, 2^1425215201 is an apocalyptic number.

It is an amenable number.

1425215201 is a deficient number, since it is larger than the sum of its proper divisors (99151).

1425215201 is an equidigital number, since it uses as much as digits as its factorization.

1425215201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99150.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1425215201 is about 37752.0224756237. The cubic root of 1425215201 is about 1125.3652018619.

The spelling of 1425215201 in words is "one billion, four hundred twenty-five million, two hundred fifteen thousand, two hundred one".