1425300021 has 6 divisors (see below), whose sum is σ = 2058766710. Its totient is φ = 950200008.

The previous prime is 1425300017. The next prime is 1425300031. The reversal of 1425300021 is 1200035241.

It can be written as a sum of positive squares in only one way, i.e., 1208327121 + 216972900 = 34761^2 + 14730^2 .

It is not a de Polignac number, because 1425300021 - 2² = 1425300017 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1425299967 and 1425300003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425300001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 79183326 + ... + 79183343.

It is an arithmetic number, because the mean of its divisors is an integer number (343127785).

Almost surely, 2^1425300021 is an apocalyptic number.

It is an amenable number.

1425300021 is a deficient number, since it is larger than the sum of its proper divisors (633466689).

1425300021 is a wasteful number, since it uses less digits than its factorization.

1425300021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158366675 (or 158366672 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1425300021 is about 37753.1458424328. The cubic root of 1425300021 is about 1125.3875263462.

Adding to 1425300021 its reverse (1200035241), we get a palindrome (2625335262).

The spelling of 1425300021 in words is "one billion, four hundred twenty-five million, three hundred thousand, twenty-one".