1425355251 has 4 divisors (see below), whose sum is σ = 1900473672. Its totient is φ = 950236832.

The previous prime is 1425355247. The next prime is 1425355273. The reversal of 1425355251 is 1525535241.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1425355251 - 2² = 1425355247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1425354251) 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, 237559206 + ... + 237559211.

It is an arithmetic number, because the mean of its divisors is an integer number (475118418).

Almost surely, 2^1425355251 is an apocalyptic number.

1425355251 is a deficient number, since it is larger than the sum of its proper divisors (475118421).

1425355251 is an equidigital number, since it uses as much as digits as its factorization.

1425355251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475118420.

The product of its digits is 30000, while the sum is 33.

The square root of 1425355251 is about 37753.8772975704. The cubic root of 1425355251 is about 1125.4020623150.

The spelling of 1425355251 in words is "one billion, four hundred twenty-five million, three hundred fifty-five thousand, two hundred fifty-one".