1430421525 has 120 divisors (see below), whose sum is σ = 2899613024. Its totient is φ = 692841600.

The previous prime is 1430421523. The next prime is 1430421529. The reversal of 1430421525 is 5251240341.

It is not a de Polignac number, because 1430421525 - 2¹ = 1430421523 is a prime.

It is a super-2 number, since 2×1430421525² = 4092211478366651250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1430421523) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1763370 + ... + 1764180.

Almost surely, 2^1430421525 is an apocalyptic number.

1430421525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1430421525 is an abundant number, since it is smaller than the sum of its proper divisors (1469191499).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1430421525 is a wasteful number, since it uses less digits than its factorization.

1430421525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913 (or 899 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 1430421525 is about 37820.9138572827. The cubic root of 1430421525 is about 1126.7338597209.

Adding to 1430421525 its reverse (5251240341), we get a palindrome (6681661866).

The spelling of 1430421525 in words is "one billion, four hundred thirty million, four hundred twenty-one thousand, five hundred twenty-five".