1001402425 has 24 divisors (see below), whose sum is σ = 1318516056. Its totient is φ = 751856640.

The previous prime is 1001402377. The next prime is 1001402449. The reversal of 1001402425 is 5242041001.

It can be written as a sum of positive squares in 12 ways, for example, as 115089984 + 886312441 = 10728^2 + 29771^2 .

It is not a de Polignac number, because 1001402425 - 2⁹ = 1001401913 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155367 + ... + 161683.

It is an arithmetic number, because the mean of its divisors is an integer number (54938169).

Almost surely, 2^1001402425 is an apocalyptic number.

It is an amenable number.

1001402425 is a deficient number, since it is larger than the sum of its proper divisors (317113631).

1001402425 is a wasteful number, since it uses less digits than its factorization.

1001402425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6717 (or 6712 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 1001402425 is about 31644.9431189250. The cubic root of 1001402425 is about 1000.4672566372.

Adding to 1001402425 its reverse (5242041001), we get a palindrome (6243443426).

The spelling of 1001402425 in words is "one billion, one million, four hundred two thousand, four hundred twenty-five".