1025001404 has 36 divisors (see below), whose sum is σ = 2158574040. Its totient is φ = 424136160.

The previous prime is 1025001401. The next prime is 1025001407. The reversal of 1025001404 is 4041005201.

It is an interprime number because it is at equal distance from previous prime (1025001401) and next prime (1025001407).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1025001401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84482 + ... + 95849.

It is an arithmetic number, because the mean of its divisors is an integer number (59960390).

Almost surely, 2^1025001404 is an apocalyptic number.

1025001404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1025001404 is an abundant number, since it is smaller than the sum of its proper divisors (1133572636).

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

1025001404 is a wasteful number, since it uses less digits than its factorization.

1025001404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180378 (or 180369 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 1025001404 is about 32015.6431139529. The cubic root of 1025001404 is about 1008.2652979678.

Adding to 1025001404 its reverse (4041005201), we get a palindrome (5066006605).

The spelling of 1025001404 in words is "one billion, twenty-five million, one thousand, four hundred four".