1421230525 has 24 divisors (see below), whose sum is σ = 2070429984. Its totient is φ = 954110400.

The previous prime is 1421230483. The next prime is 1421230529. The reversal of 1421230525 is 5250321241.

It is not a de Polignac number, because 1421230525 - 2¹¹ = 1421228477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1421230525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421230529) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195199 + ... + 202348.

It is an arithmetic number, because the mean of its divisors is an integer number (86267916).

Almost surely, 2^1421230525 is an apocalyptic number.

It is an amenable number.

1421230525 is a deficient number, since it is larger than the sum of its proper divisors (649199459).

1421230525 is a wasteful number, since it uses less digits than its factorization.

1421230525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397581 (or 397576 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 1421230525 is about 37699.2111986445. The cubic root of 1421230525 is about 1124.3154419699.

Adding to 1421230525 its reverse (5250321241), we get a palindrome (6671551766).

The spelling of 1421230525 in words is "one billion, four hundred twenty-one million, two hundred thirty thousand, five hundred twenty-five".