1421530525 has 12 divisors (see below), whose sum is σ = 1839337632. Its totient is φ = 1087779440.

The previous prime is 1421530427. The next prime is 1421530549. The reversal of 1421530525 is 5250351241.

It is not a de Polignac number, because 1421530525 - 2¹⁷ = 1421399453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1421530493 and 1421530502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1235539 + ... + 1236688.

It is an arithmetic number, because the mean of its divisors is an integer number (153278136).

Almost surely, 2^1421530525 is an apocalyptic number.

It is an amenable number.

1421530525 is a deficient number, since it is larger than the sum of its proper divisors (417807107).

1421530525 is a wasteful number, since it uses less digits than its factorization.

1421530525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2472260 (or 2472255 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The square root of 1421530525 is about 37703.1898517884. The cubic root of 1421530525 is about 1124.3945449952.

Adding to 1421530525 its reverse (5250351241), we get a palindrome (6671881766).

The spelling of 1421530525 in words is "one billion, four hundred twenty-one million, five hundred thirty thousand, five hundred twenty-five".